Numerical study on flow-induced vibration characteristics of three-dimensional hydrofoil in cavitating flow
文献类型：会议论文
| 作者 | Wang C(王畅); Liu YQ; Du TZ(杜特专) ; Wang YW(王一伟)
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| 出版日期 | 2019 |
| 会议日期 | July 28, 2019 - August 1, 2019 |
| 会议地点 | San Francisco, CA, United states |
| 关键词 | Cloud cavitation Dimensional parameters Flexible hydrofoil Flow-induced vibration Numerical simulation |
| 英文摘要 | With the increasing demand of higher performance and efficiencies for marine propulsion and hydropower system, structures became more flexible and were subjected to high flow rates. Cavitation-structure interaction has become one of the major issues for most engineering applications. In order to analyze the characteristics of unsteady cavitating flow induced vibration, the cloud cavitation flow over three dimensional NACA66 hydrofoil is studied by numerical simulation in this paper. The cavitating flow is modeled by large eddy simulation method and Zwart cavitation model, and the structural vibration model of three dimensional hydrofoil is established. The numerical calculation of fluid-solid coupling is realized based on ANSYS Workbench. The main dimensionless parameters of three-dimensional hydrofoil cavitation flow-induced vibration are obtained by means of dimensional analysis, including density ratio, cavitation number, Reynolds number, and the frequency ratio of flow to structure. The changes of cavity morphology during the cloud cavitation development of flexible hydrofoil and the flow-induced vibration characteristics under cloud cavitation flow of flexible hydrofoil are analyzed. The results showed that the periodic development of cavitation can be divided into three stages: the growth of attached cavity, the development of re-entrant jet and the shedding of cavity in cloud cavitaion stage. The centroid displacement of the free end of the flexible hydrofoil varies periodically with time at the stage of cloud cavitation. The hydrofoil vibration is affected by the development of cloud cavitation, and the vibration frequency corresponds to the shedding frequency of cloud cavitation. Copyright © 2019 ASME. |
| 会议录 | ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019
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| 语种 | 英语 |
| URL标识 | 查看原文 |
| ISBN号 | 9780791859087 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/85106]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Beijing Institute of Space System Engineering, Beijing, 100076, China 2.Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China |
| 推荐引用方式 GB/T 7714 | Wang C,Liu YQ,Du TZ,et al. Numerical study on flow-induced vibration characteristics of three-dimensional hydrofoil in cavitating flow[C]. 见:. San Francisco, CA, United states. July 28, 2019 - August 1, 2019. |
入库方式： OAI收割
来源：力学研究所
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